Influence of group-velocity mismatch on soliton switching in a nonlinear fibre coupler
Li Hong (李宏)ab, Huang De-Xiu (黄德修)a, Wang Dong-Ning (王东宁)c
a Department of Optoelectronic Engineering, Huazhong University of Science and Technology Wuhan 430074, China; b Department of Physics, Hubei Normal University Huangshi 435002, China; c; Department of Electrical Engineering, The Hong Kong Polytechnic University Hung Hom, Kowloon, Hong Kong, China
Abstract In this work, the influence of group-velocity mismatch on soliton self-routing pulse switching in a nonlinear fibre coupler is discussed in detail by the use of both variational approach and numerical simulation. The results obtained show that the group-velocity mismatch leads to the relative displacement between the two orthogonal polarization modes, increase of the critical power, and reduction of the elimination-light ratio. For sub-ps pulse, the influence cannot be neglected.
Received: 29 September 2002
Revised: 10 December 2002
Accepted manuscript online:
Fund: Project supported by the ICTP (International Centre for Theoretical Physics) Programme for Training and Research in Italian Laboratory, Trieste, Italy (Grant No. BC:402 (2001)).
Cite this article:
Li Hong (李宏), Huang De-Xiu (黄德修), Wang Dong-Ning (王东宁) Influence of group-velocity mismatch on soliton switching in a nonlinear fibre coupler 2003 Chinese Physics 12 415
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